The INMP521 is a high performance, ultra low noise, low power, digital output bottom-ported omnidirectional MEMS microphone. The INMP521 consists of a MEMS microphone element and an impedance converter amplifier followed by a fourth-order Σ-Δ modulator. The digital interface allows for the pulse density modulated (PDM) output of two microphones to be time-multiplexed on a single data line using a single clock. The INMP521 is function- and pin-compatible with the INMP421 microphone, providing an easy upgrade path.
The INMP521 has a very high SNR and common sensitivity of −26 dBFS, making it an excellent choice for far field applications. The INMP521 has an extended wideband frequency response resulting in natural sound with high intelligibility. Low current consumption and a sleep mode with less than 1 µA current consumption enables long battery life for portable applications. The INMP521 complies with the TIA-920 Telecommunications Telephone Terminal Equipment Transmission Requirements for Wideband Digital Wireline Telephones standard. The INMP521 is available in a thin 3 mm × 4 mm × 1 mm surface-mount package. It is reflow solder compatible with no sensitivity degradation. The INMP521 is halide free.
|Part #||Output||Port Location||SNR||Equivalent
||Maximum SPL||Sensitivity @1kHz||Sensitivity Tol||Package Size||Documentation||Flex Board||Evaluation Board||Device|
|UNITS:||(dBA)||(dBA)||(min - max)||+/- dB||mm||(.pdf)||(add to cart)||(add to cart)||(add to cart)|
|PDM||Bottom||65dB||29dB||100Hz - 16kHz||120dB SPL||-26 dBFS||3dB||3.00x4.00x1.00|
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